Spring-hinge.



W. J. COWAN. SPRING HINGE.

APPLloATIoN TILED' 00123. 1902,

Nq. 720,116. 'l PATENTED FEB. '10, 1903.-

`l0 IODEL.

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' *fJUowan UNITED STATES PATENT EETCE.

WILLIAM JVCOWAN, OF KANSAS CITY, MISSOURI.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 720,116, dated February 10, 1903. Application iiled October 3, 1902. Serial No. 125,768. (No model.)

manner that the door may be removed-fromn its doorway or frame without removing the hinges from either the door or the frame, as a part of each hinge will remain fixed to the door, while the other part of each hinge will remain fixed to the frame or casing. y

Referring now to the drawings, Figure 1 is a front elevation of a hinge constructed in accordance with this invention, showing portions of a door and the frame to which the hinge is secured. Fig. 2 is a sectional plan view taken on line II II of Fig. 1. Fig. 3 is a vertical section of the hinge, taken on line III III of Fig. 2. Fig. 4is a bottom plan view of the spring-holding member of the hinge. Fig. 5 is a top plan ViewV of 'the detachable member of the hinge. Fig. 6 represents a wrench adapted for tensioning the spring of the hinge.

1 designates the spring-holding member of the hinge. This member is secured t0 a door frame or casing 3 by screws 4.

2 designates the complementary hinge member, which is secured to the door-stile 5 by screws 4.

Integral with the inner portion of the hinge member 1 .is a spring-housing 6, having a cylindrical bore therethrough. The outer 'corner of said housing adjacent tothe member 2 is rounded, as shown. Arecess adapted to Y receive said housing is cut in the edge of the 8, in which is a concentric hole in whichisV rotatably mounted the lower end of the pintle 9. Integral with said pintle, near the uplper end thereof', is a collar 10, which fits rotatably within the bore of the housing 6. The upper end of the pintle is squared for the purpose described hereinafter. Surrounding the pintle between the collars 8 and 10 is a helical spring 12. `The upper end of said spring is inserted permanently in a hole drilled in the rotatable collar 10, and the lower end of said spring is inserted permanently in ahole drilledin thefiXed collar 8.

The pintle 9 is shouldered near its lower end, so that vthe portion 9 thereof, that is mounted intheY collar 8, is of smaller diameter than the mai-n portionrofthe pintle. This prevents the pintle from Working downward through said collar 8.

The leaf 2, which is attached to the door, is provided at its upper end with a horizontallyprojeetin'g'ear 13, in which is'a square opening adapted to iit, but not tightly, over the squared upper end 9H of the pintle. The thickness of said ear should be equal to the height of saidsquared end of the pintle. The recess cut in the door-frame 3 .must be elongated above the housing 6 sufficiently to allow the ear 13 to be raised off from the pintle, so that the door may be removed from the frame without drawing any of the screws 4.

Supposing the door to havebeen removed from its frame, the operation of remounting it upon the hinge member 1 Would'be as follows: The door is set at approximately a right angle with its frame-that is, inhalf-open position. The squared end 9" of the pintle 9 is engaged by a thin wrench, as; 14, and is .turnedin the proper direction to tighten the Yspring 12.A When a suitable tension is produced, the pintle is turned (if necessary) to permit the opening in the ear 13`to register therewith, and the door isthenraised, the said opening is registered with the pintle, and the door is lowered until the ear 13 rests upon the housing 6. rlhe wrench is of course removed from the pintle as soon as the latter enters the opening inthe :ear 13.V Two or more of these hinges being'employed for each door, the doorwill be held in alinement as strongly as by any other type of spring-hinge. By using this hinge the labor of attaching and detaching the leaves of the hinge from the frame or the door is obviated.

Having now fully described my invention,

IOO

what I claim as new, and desire to secure by collars, and a detachable leaf provided at its Letters Patent of the United States, istop with a horizontally-projecting ear hav- A separable spring-hinge comprising a ing an opening therein adapted to it over I5 spring-housing having a leaf integral therethe upper end of the pintle, substantially as 5 with, a collar secured non-rotatably in the described. y

bottom of the housing, a piutle having its In testimony whereof I affix my signature lower end rotatably mounted in said collar, a in the presence of two witnesses. rotatable collar on the upper portion of the pintle, Within the housing, the upper end of WILLIAM J' (JOWAN' io the pintle being squared, a helical spring surl Witnesses:

rounding the pintle between said collars and K. M. IMBODEN, having its respective ends secured to said i A. XV. HIRSCH. 

